How to Invent and Protect Your Invention: A Guide to Patents for Scientists and EngineerseBookHow to Invent and Protect Your Invention: A Guide to Patents for Scientists and EngineerskaryaJoseph P. KennedyPenilaian: 0 dari 5 bintang0 penilaianSimpan How to Invent and Protect Your Invention: A Guide to Patents for Scientists and Engineers untuk nanti